String Theory! vs Rhizo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
String Theory!
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String Theory is a visual detective board app that helps you organize ideas, clues, and connections in one place. Create interactive boards where you can add Polaroid-style photos, notes, tags, and images, pin them freely, and connect everything with strings to reveal patterns and relationships. Perfect for detectives, writers, students, researchers, and creative thinkers, String Theory turns complex information into a clear visual map. Whether you’re solving a mystery, planning a story, organizing research, or brainstorming ideas, your board evolves as your thoughts connect. Features: - Create unlimited detective boards - Add Polaroid photos, images, and notes - Pin items anywhere on the board - Connect clues using realistic strings - Use tags to organize and group ideas - Clean, intuitive, and distraction-free design Organize your thoughts visually. See the connections. Follow the strings. Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Rhizo
This app offers a fluid and tactile mind-mapping experience, allowing users to capture and organize thoughts without forced structure. It prioritizes a minimalist interface and seamless interaction for a stress-free creative process. Ideas can be exported in various formats, ensuring data ownership.
- Kinetic thought nodes with physics simulation
- Minimalist gestures for idea creation and connection
- Infinite canvas with auto-adaptive nodes
- Seamless export to JSON and PNG
- Local data storage for absolute privacy
- Ad-free and no in-app purchases
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Rhizo is a calm, tactile space for ideas that are still taking shape. Write a thought. Move it where it belongs. Connect it to whatever it changes. No rigid templates. No forced hierarchy. Just a simple canvas that helps you see what you are thinking. In a few minutes, you can turn scattered thoughts into a working structure you can return to, expand, and act on. Every interaction is designed to stay out of the way: • Press to create a new block • Drag ideas into place • Double-tap to write • Connect related thoughts directly on the canvas • Add text and images when an idea needs more context The result is a clearer workspace with less mental overhead. Instead of keeping open questions, references, decisions, and next steps in your head, keep them visible on the canvas. That means fewer context switches and less time reconstructing what you meant. Rhizo is built for relationships that do not fit neatly into a tree: • One idea can connect to multiple parent ideas • Several ideas can share the same child • Cross-connections stay visible • Your structure remains a flexible network Most mind-mapping tools are designed to produce a finished diagram. Rhizo is designed for thinking while the idea is still changing. The canvas moves with you. Gentle motion and responsive feedback make each action feel direct without distracting you from the work. When your structure is ready, export it as editable JSON with stable IDs, text, positions, and relationships. Open the file in the AI assistant you already use. Ask it to expand, reorganize, summarize, or challenge your thinking. Then import the updated JSON back into Rhizo without flattening the structure. Your AI workflow stays connected to the original board. Use Rhizo for: • Game design • Product planning • Study notes • Research • Writing • Project breakdowns • Brainstorming • Visual thinking Start with one question: “What are you working on?” Then keep building from there. Your content stays on your device. Rhizo supports iPhone, iPad
Screenshots
Verdict
The clearest difference is in-app purchases: Rhizo at none against String Theory!'s 3. Rhizo also leads on ads (none vs shown). String Theory!'s advantage is iOS requirement (15.1 vs 17.0). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. String Theory! sells 3 in-app purchases, starting at $2.99 per 7 days. Rhizo asks for nothing beyond the download.
| Parameter | String Theory! | Rhizo |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 7 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 56 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Synthify Inc | 现兴 闫 |
In-app purchases
String Theory!
- Weekly$2.997 Days
- Yearly$24.991 Year
- One Time$29.99
Rhizo
No in-app purchases








